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Lex Kravitz

@kravitzlab.com

Neuroscientist studying obesity, feeding, and dopamine

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10.09.2023
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Latest posts by Lex Kravitz @kravitzlab.com

When someone says „Scientists do not want you to know“ you can dismiss everything from there on. Scientists want you to know. They are desperate that you know. They can’t shut up about what they found out and want you to know.

03.03.2026 12:10 👍 9461 🔁 4114 💬 77 📌 164

Any truck news?

22.01.2026 01:08 👍 2 🔁 0 💬 1 📌 0

Strange story! Hopefully you can walk the line and teach them about remixing permissions while also not inhibiting their interests in 3d design, printing, and even business! If possible I'd try communicating with their parents instead of the 10yo directly.

17.01.2026 11:30 👍 1 🔁 0 💬 1 📌 0

Yeah let's send the findings through their tool!

06.01.2026 16:27 👍 2 🔁 0 💬 0 📌 0

If it's the group from U Chicago I did it. It was fine, but none of the suggestions made sense as actual experiments to complete, and I responded as such. I can't seem to find the results in my email but they did not make enough of an impression on me to save them or think about them again.

06.01.2026 13:14 👍 4 🔁 0 💬 1 📌 0
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a man pointing to a sign that says believe ALT: a man pointing to a sign that says believe

2025 was a rough year for science worldwide (and in general), but, despite everything, I am optimistic. Why? Because of
@qedscience.bsky.social! This crazy endeavour actually has a chance of changing how academia works.. 👇

31.12.2025 12:59 👍 47 🔁 3 💬 4 📌 0

Thanks for your work on this, it's really really really impressive! I look forward to the updates!

31.12.2025 13:21 👍 3 🔁 1 💬 1 📌 0

@superkash.bsky.social Hey Tom any truck news lately?

17.12.2025 04:38 👍 1 🔁 0 💬 0 📌 0

Haha thanks! I love how you're rocking the DIY build!

16.12.2025 17:30 👍 0 🔁 0 💬 0 📌 0

I totally agree it was needless on a short piece like this!

15.12.2025 12:54 👍 1 🔁 0 💬 0 📌 0
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This statement gave me a hall of mirrors feeling.

14.12.2025 14:17 👍 7 🔁 0 💬 1 📌 0
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Just got home from a trip and received this book by @juliabelluz.bsky.social and @kevinh-phd.bsky.social!

25.09.2025 00:47 👍 8 🔁 1 💬 1 📌 0
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pyPhotometry V2 — Open Ephys SKU: OEPS-8011 pyPhotometry is an open source system for fiber photometry data acquisition . Version 2 includes: 2x Analog inputs for photometry signals. The system supports time-division mul...

pyPhotometry v2 is now in our store! 🚀

⚡Output current of the 2 onboard LED drivers increased to 300 mA
🔦🔦 2 alternative LED digital output channels to trigger external optical hardware that have integrated LED drivers
🔌Additional connections to the pyBoard for expansion

#OpenEphys #pyPhotometry

02.09.2025 10:00 👍 12 🔁 4 💬 0 📌 0
JCI - Incretin receptor agonism rapidly inhibits AgRP neurons to suppress food intake in mice

Excited to share work led by my PhD student Hayley McMorrow now published in @jclinical-invest.bsky.social. Hayley showed that GIP and GLP-1 receptor agonists rapidly inhibit AgRP neurons and that endogenous GIP is important for nutrient-mediated AgRP neuron inhibition. doi.org/10.1172/JCI1...

30.08.2025 17:05 👍 26 🔁 10 💬 2 📌 0

Thank you Sung-Yon!

24.07.2025 13:47 👍 0 🔁 0 💬 0 📌 0

Thank you for your kind reply!

24.07.2025 13:46 👍 1 🔁 0 💬 0 📌 0

I've found rotary joints unusable for photometry, we've tried a few types (doric, Thor) but they introduce a lot of artifacts when they rotate. So we don't use rotary joints, instead use long 3 meter cables and loop them up high so there's room for the fibers to twist up some without tangling.

07.07.2025 22:19 👍 6 🔁 0 💬 1 📌 0
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If you missed out on a spot at the other neuroscience/psychoactive drug GRCs this summer, we still have spots open at the Cannabinoid GRC with an exciting program ranging from clinical to pre-clinical to big data to society! Register today! grc.org/cannabinoid-... RT please!

26.06.2025 22:31 👍 10 🔁 9 💬 0 📌 0
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Postdoctoral Researcher in Psychoneuroimmunology Do you want to contribute to improving human health? Join a dynamic and inclusive research group at the forefront of psychoneuroimmunology, where we investigate the interplay between behavior, brain f

‼️🚨 postdoc position 🚨‼️
I am looking for a postdoc in psychoneuroimmunology - come join our group to work on sickness behavior in humans 🤒🦠 at Karolinska Institutet @ki.se !!

ki.varbi.com/en/what:job/...

deadline July 31st

@pnirs.bsky.social #neuroskyence #PsychSciSky #interoception

21.06.2025 11:37 👍 40 🔁 32 💬 3 📌 6
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A simple action reduces high-fat diet intake and obesity in mice Diets that are high in fat cause overeating and weight gain in multiple species of animals, suggesting that high dietary fat is sufficient to cause ob…

This was a really fun project: We blocked obesity in mice by making them do a tiny bit of work for their food. www.sciencedirect.com/science/arti...

19.06.2025 15:05 👍 61 🔁 19 💬 8 📌 0

Congratulations!!

04.05.2025 21:10 👍 1 🔁 0 💬 0 📌 0
The Gleichman lab

Thrilled to announce that my lab is now open at Ohio State! We study astrocytes as gene therapy targets for brain repair after ischemic stroke and in vascular dementia, developing new viral tools along the way. If you're interesting in joining or collaborating, please reach out!
gleichmanlab.com

01.05.2025 20:24 👍 73 🔁 30 💬 10 📌 2
Pamphlet of the President's Environmental Program 1979

Pamphlet of the President's Environmental Program 1979

Quote from Jimmy Carter: "Ten years ago, at the dawn of the environmental decade, we landed on the moon. For the first time people could stand on the surface of another world and look at the whole earth. The sight of earthrise was awesome. It was also sobering. From that moment we could no longer avoid understanding that all life must share this one small planet and its limited resources."

Quote from Jimmy Carter: "Ten years ago, at the dawn of the environmental decade, we landed on the moon. For the first time people could stand on the surface of another world and look at the whole earth. The sight of earthrise was awesome. It was also sobering. From that moment we could no longer avoid understanding that all life must share this one small planet and its limited resources."

I found Jimmy Carter's Environmental Program (fittingly?) in the dumpster in the alley behind my house. "The sight of earthrise was awesome. It was also sobering. From that moment we could no longer avoid understanding that all life must share this one small planet and its limited resources."

02.05.2025 01:45 👍 3 🔁 0 💬 0 📌 0
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It's funny that ChatGPT does this shit too

26.04.2025 03:07 👍 2 🔁 0 💬 0 📌 0

The fit line looks like poverty is rising robustly, but I'm not seeing that in the data points themselves. Maybe end the fit line at the min and max of the data instead of extending past it?

21.04.2025 02:58 👍 1 🔁 0 💬 1 📌 0
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Top researcher quits NIH, citing censorship under RFK Jr. | CNN Dr. Kevin Hall joins The Lead

Thanks to @jaketapper.bsky.social for inviting me on his show yesterday! www.cnn.com/2025/04/17/h...

18.04.2025 11:50 👍 827 🔁 246 💬 15 📌 9
2026 Basal Ganglia Conference GRC The 2026 Gordon Research Conference on Basal Ganglia will be held in Lucca (Barga), Lucca Italy. Apply today to reserve your spot.

The preliminary program for the 2026 Basal Ganglia Gordon Research Conference is up! www.grc.org/basal-gangli...

Super excited about this program and to move the meeting to Europe for the first time - come join us in Tuscany!

17.04.2025 13:23 👍 31 🔁 17 💬 7 📌 1
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After 21 years at my dream job, I’m very sad to announce my early retirement from the National Institutes of Health. My life’s work has been to scientifically study how our food environment affects what we eat, and how what we eat affects our physiology.

16.04.2025 21:00 👍 2630 🔁 603 💬 144 📌 127
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A neuroimmune circuit mediates cancer cachexia-associated apathy Cachexia, a severe wasting syndrome associated with inflammatory conditions, often leads to multiorgan failure and death. Patients with cachexia experience extreme fatigue, apathy, and clinical depres...

1/ Why do patients with late-stage cancer lose motivation & sink into apathy?
🔥 Our new Science paper shows chronic inflammation activates a cytokine-sensing brain circuit that lowers motivation. Huge team effort: Aelita Zhu, Sarah Starosta, Pignatelli & Janowitz labs! 🧵
🔗 doi.org/10.1126/scie...

11.04.2025 14:00 👍 100 🔁 45 💬 4 📌 4

12/ This project took a *huge* team, spanning neuroscience, immunology, and cancer. Grateful to co–first authors Aelita Zhu, Sarah Starosta, co–senior authors Marco Pignatelli & Tobias Janowitz & ours labs & all our amazing collaborators including @kravitzlab.com & Pavel Osten.

11.04.2025 14:00 👍 4 🔁 1 💬 1 📌 0